NEVER send specially constructed
packets a computer you do not own or have
the owner's permission to scan.
- Last Review: July 29, 2013
Home > NetScanTools
Pro > Technical Details > Packet
Generator Tool > TCP Packet Generator
TCP Packet Generator Description
Craft and send TCP packets using the NetScanTools Pro Packet Generator.
Purpose of the TCP Portion of the Packet Generator Tool
- The purpose of this tool is to
give you a way to craft a TCP packet or set of TCP packets
to send to a target, then observe the target's response
with a packet capturing tool like
or view the results of those packets attacks in the
log files on the target. For example, you might alter
a TCP SYN packet with information that is not usually
found in the packet in order to see the response of
a web server to the malformed packet.
TCP Packet Generator Capabilities
- Sends TCP Packets to the IPv4
- Full header control for the TCP
packet. You can specify most parameters in the header
such as source and destination IPv4 address, source
and destination ports, packet length, packet types,
flags and checksums. The ethernet source and destination
address can also be defined.
- Data Payload can be added.
The payload can be simple text or a file of your choosing.
The length of the data payload is limited by the interface
MTU and the packet type. We provide a Hex Editor to
assist in creating or editing binary packet payloads.
- The packet size is limited to
the MTU of your network, typically 1460 bytes for
- Scripting. Simple scripting
is provided so that you can send different types packets.
Scripted packet transmission can be used to send packets
with parameters changing according to your script.
What this tool does not do:
- This tool does not do handshaking
of TCP connections - in other words, it does not
listen for a response during a TCP handshake and send
a different TCP packet in reply.
- This is not a packet flooding
tool. Burst rate is about 20Khz and this may vary
from computer to computer.
- This is not a bandwidth testing
tool. You are looking for a piece of dedicated hardware:
Agilent Technologies and Fluke both make these type
- This is not a traffic generator
capable of stressing a network interface.
- Do not use this tool if you have
an active virtual machine ethernet interface. This
tool works best with physical ethernet interfaces. You
are welcome to try it with your virtual machine, but
do not count on it working perfectly.
- This tool cannot send custom packets
through WAN (PPP/SLIP) interfaces like modems or
wireless cellular modems.
A video of the Packet Generator tool sending TCP Packets
More Information about the Packet Generator